Dinwoody Formation

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Dinwoody Formation
Stratigraphic range: Induan, ~
TypeGeological formation
Lithology
PrimaryShale, limestone
Location
RegionIdaho, Montana, Utah, Wyoming
CountryUnited States
Dinwoody Formation is located in the United States
Dinwoody Formation
Dinwoody Formation (the United States)

The Dinwoody Formation is a geologic formation in the western United States (Idaho, Montana, Utah, Wyoming). It preserves fossils dating back to the Triassic period (Induan stage).[1]

Fossil content

Color key
Taxon Reclassified taxon Taxon falsely reported as present Dubious taxon or junior synonym Ichnotaxon Ootaxon Morphotaxon
 Notes
Uncertain or tentative taxa are in small text; crossed out taxa are discredited.

Molluscs

Cephalopods

Cephalopods of the Dinwoody Formation
Genus Species Location Stratigraphic position Material Notes Images
Xiaohenautilus[2] X. chatelaini A grypoceratid trigonoceratoid

See also

References

  1. Hofmann, Richard; Hautmann, Michael; Bucher, Hugo (2013). "A New paleoecological look at the Dinwoody Formation (Lower Triassic, Western USA): intrinsic versus extrinsic ycontrols on ecosystem recovery after the end-Permian mass extinction" (PDF). Journal of Paleontology. 87 (5): 854–880. Bibcode:2013JPal...87..854H. doi:10.1666/12-153. S2CID 130380562.
  2. Jenks, J. F.; Maekawa, T.; Shigeta, Y.; Ware, D.; Brayard, A.; Bylund, K. G.; Stephen, D. A.; Kittrick, N. (2025). "Early Dienerian ammonoids and nautiloids and a new late Griesbachian ammonoid site from the Dinwoody Formation (Thaynes Group) at Crittenden Springs, Elko County, Nevada" (PDF). New Mexico Museum of Natural History and Science Bulletin. 97: 1–29.